Across
1
Wearing away of land by water or wind
4
Height above sea level
7
Low-lying land surrounded by higher ground
9
Land surrounded by water on three sides
Down
2
Region surrounding the North Pole
3
Where river meets the sea
5
Narrow sea inlet between cliffs
6
Seasonal heavy rainfall
8
Largest hot desert in the world
10
Imaginary line around the middle of Earth